I would see if perhaps there is another apartment that is nearby that you could take your time moving into. Or talk to the rental office and see if perhaps they could do something. A lot of places have rules about not smoking inside, but you can outside, which to me seems perfectly reasonable--probably b/c I am a non-smoker. But, it's hazardous to your health and the health of your family, including the baby on the way. There would have to be something the rental office can do, even if it's saying "our buildings are non smoking, and if you want to smoke can you please do it outside". Start there, and see where you end up. What rental property owns the apartments where you live? See if perhaps they have a corporate office nearby where you can address the issue further if necessary. The last thing they are going to want is a lawsuit on their hands!
:)